Improvement in shovel-teeth for cultivators



` tion.

Usare@ rares ATENT THOMAS HARDING, LA FAYEITE, INDIANA.V

Specification forming part of Letters Patent No. 105,570, dated July 19,1870.

` tors, &c.; andI db hereby declare the following to be a full, clear,andeXa-ct description ot' the same, reference being had to theaccompanying drawings, in which- Figure l is a perspective view of myinven- Fig. 2 is a plan view ofthe same.

Itis wellknownthatin operating an ordinary cultivator it is sometimesadvantageous to set certain ot the teeth or shovels oblique to the lineof progression, so that the earth shall be thrown toward the hill or rowof corn, while at other times the same teeth may require to be p setperpendicular to the line of progression.

I am aware that various devices have been made whereby the tooth mightbe adjusted at an angle oblique to the line of progression; but I am notaware that such an adjustment has been accomplished by means ofclampingstraps attached rigidly to the tooth and tightened by a boltoutside ofthe standard.

That others may fully7 understand my invention, I will particularlydescribe it.

A is the standard or brace, to which the tooth B isattached.` At itsupper end the standard A is secured to th/e frame ofthe machine. 4 l

The tooth B is'lnade in the usual manner, and is provided at its backwith a clampingstrap, O. This strap is rigidly secured to thebacking-plate D, or directly to the tooth, it' the same is madesufficiently strong, and is open at the rear, thetwo ends ad beingturnedoutward, so as to be about parallel with each other, and aclamping-bolt, E, passes through both. ot' them. When the ends a a areforced toward each other by the bolt E the straps (l are forced upon thestandard A, clasping it on all sides rmly and securely. By relaxing theclamping-bolt the tooth may be adjusted at anyfangle to the line ofprogression; or it may be removed from the standard.

The tooth B is made double-pointed, so that it may be reversed when onepoint becomes dull; and it will be observed that the tooth vTHOMASHARDING.

Witnesses:

CHARLES G. PARKER,

P. H. SHEEHAN.

